100 Rupees Haj Pilgrim, Reserve Bank of India

India's Haj pilgrim notes occupy a genuinely peculiar corner of monetary history. Issued specifically for Indian Muslims traveling to Mecca for the Haj, they were legal tender in Saudi Arabia but not in India itself — a deliberate mechanism to prevent the notes from being repatriated and used to circumvent India's strict foreign exchange controls under the Foreign Exchange Regulation Act. The Reserve Bank issued them through authorized agents, and pilgrims surrendered their ordinary rupees to receive these in exchange.

Saudi Arabia eventually objected to the arrangement, and the series was discontinued in 1978 after sustained diplomatic pressure. Pakistan had operated a nearly identical scheme with its own Haj notes.